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Fallen truck removed from the Burlington Skyway
Canadian Weather | Southern Ontario

Lake-effect snow for Ontario following deadly wind storm

Digital writers

Thursday, March 9, 2017, 3:27 PM - After snow squall warnings in the morning, parts of southern Ontario are looking at another round of squalls in the evening, following powerful winds that killed at least one person Wednesday.

The south of the province is still at the beginning of what's shaping up to be a multi-day lake-effect event, with snow squall watches issued mid-afternoon for much of the southwest, including the western GTA.

"Snowfall rates under the more intense snow squalls are expected to be in the range of about 10 to 15 cm per 12 hours," Environment Canada says. "Strong northwesterly winds will also result in blowing snow at times."


  • Snow squalls re-develop for much of the southwest.
  • Wind gusts of 30-60 km/h likely Thursday.
  • Clipper system south of the Lower Great Lakes to bring dusting of snow to GTA overnight.
  • Lake-effect snow to continue through Saturday for southern Ontario.
  • At least one person was killed amid high winds Wednesday: A construction worker who died in a collapse at a construction site.

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Meanwhile, extreme cold warnings remain in effect for northern Ontario, with blowing snow expected to persist through Friday.

"Winds associated with a winter storm centred over Hudson Bay and cold Arctic air are generating extreme wind chills near minus 45," says Environment Canada. "These conditions will continue today and then improve on Friday."

A clipper system south of the Lower Great Lakes is forecast to bring a dusting of snow to the Greater Toronto Area overnight.

On Wednesday, reporters confirmed a construction worker in Oakville was killed during a wall collapse on a construction site amid high winds. The Ministry of Labour was notified. Halton Region Police say the victim was 23 years old.

More than 60,000 Hydro One customers were without power Wednesday afternoon. Winds continue to ease, with just over 9,900 customers without power as of 8 a.m. local time Thursday.

SPRING IS HERE: With La Niña helping shape global patterns what will Canadians expect from spring? Find out with The Weather Network’s 2017 Spring Forecast | FORECAST & MAPS HERE

At the system's peak, wind gusts of 115 km/h were recorded in Hamilton by the mid afternoon, and 100 km/h in London, with lesser but still hefty gusts across the region. Downed trees were reported in many communities as well as damage to structures.

The Queen Elizabeth Way was closed in both directions over the Burlington Skyway after a truck toppled over. Though the truck was removed in the afternoon, the Skyway remained closed until a little after 5 p.m.

The high winds were part of an expansive system that brought dangerous blizzard conditions to Saskatchewan and Manitoba.

Residents in the Hamilton and Burlington area took to Twitter to share photos of blown-down fences and building damage (See photos, below).

Image courtesy: Paul P -- Chatham, Ontario

Image courtesy: Dave Harkins -- Etobicoke, Ontario

Image courtesy: Catalina Navarro -- King City, Ontario

Image courtesy: Marty Sandig -- Caledonia, Ontario

Image courtesy: Steve McCready -- London, Ontario

Image courtesy: Sara Cuthbert -- Burlington, Ontario

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